1172146656 has 24 divisors (see below), whose sum is σ = 3076885224. Its totient is φ = 390715520.

The previous prime is 1172146609. The next prime is 1172146681. The reversal of 1172146656 is 6566412711.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6104835 + ... + 6105026.

It is an arithmetic number, because the mean of its divisors is an integer number (128203551).

Almost surely, 2^1172146656 is an apocalyptic number.

1172146656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1172146656 is an abundant number, since it is smaller than the sum of its proper divisors (1904738568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1172146656 is a wasteful number, since it uses less digits than its factorization.

1172146656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12209874 (or 12209866 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 1172146656 is about 34236.6274039953. The cubic root of 1172146656 is about 1054.3722914820.

The spelling of 1172146656 in words is "one billion, one hundred seventy-two million, one hundred forty-six thousand, six hundred fifty-six".